Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, a stack buffer overflow in the H.323 `ooTrace()` trace-logging function can occur when unbounded `vsprintf` writes into a fixed `2048-byte buffer`. A remote attacker may send a carefully crafted packet that causes the Asterisk process to crash. The `chan_ooh323` addon channel driver must be explicitly compiled and installed, which is not the default, and its port must be publicly reachable. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
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Affected Vendors & Products
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History
Fri, 30 Oct 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
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ssvc
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Tue, 27 Oct 2026 19:30:00 +0000
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Asterisk
Asterisk asterisk Asterisk certified Asterisk |
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| Vendors & Products |
Asterisk
Asterisk asterisk Asterisk certified Asterisk |
Tue, 27 Oct 2026 17:00:00 +0000
Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-10-27T16:56:37.203Z
Updated: 2026-10-30T20:19:58.895Z
Reserved: 2026-06-24T02:00:46.800Z
Link: CVE-2026-57201
Updated: 2026-10-30T20:19:55.286Z
Status : Undergoing Analysis
Published: 2026-10-27T17:17:02.117
Modified: 2026-10-30T21:17:12.730
Link: CVE-2026-57201
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